Structural and Mechanical Variations of Major Ampullate Silk Spun by Malaysian Nephila pilipes Spider 


Vol. 24,  No. 3, pp. 1029-1038, Mar.  2023
10.1007/s12221-023-00057-3


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  Abstract

Major ampullate (MA) silk is a natural biomaterial, spun by spiders with exceptional mechanical characteristics. Most researchers who studied MA silk structure were primarily interested in the properties of a dragline thread that protrudes from the spider셲 spigot when being chased by its predator. Apart from the dragline, the MA silk fi bers may also be found in three pivot threads of the orb web known as the mooring, framework, and radial. However, it is currently uncertain whether the MA silk in these threads has properties similar to the dragline thread. Thus, this work attempted to compare the properties of MA silk fi ber in the mooring, framework, radial, as well as the dragline threads. The MA silk fi bers in mooring thread were found to exhibit signifi cant quantity of MA fi bers (12 짹 5.0 fi bers per thread), thickness diameter (11.7 짹 0.6 關m), and supercontraction eff ect (high swelling ratio of 18.6), with an outstanding combination of strength (4464 MPa) and toughness (875 MJ/m 3 ), outperforming the dragline thread. Positive correlation was found between the diameter of MA fi bers and supercontraction eff ect and between the number of MA fi bers and tensile strength. These fi ndings might be modeled as a fundamental guide in silk spinning for future synthetic MA silk fi ber development with extraordinary mechanical performance.

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  Cite this article

[IEEE Style]

N. A. H. Abdullah, K. S. K. Ismail, K. H. A. Rahman, J. A. Mohtar, M. M. a. B. Abdullah, S. B. Bakarudin, B. Y. Khoo, "Structural and Mechanical Variations of Major Ampullate Silk Spun by Malaysian Nephila pilipes Spider," Fibers and Polymers, vol. 24, no. 3, pp. 1029-1038, 2023. DOI: 10.1007/s12221-023-00057-3.

[ACM Style]

Nurul Ain Harmiza Abdullah, Ku Syahidah Ku Ismail, Khadijah Hanim Abdul Rahman, Johan Ariff Mohtar, Mohd Mustafa al Bakri Abdullah, Saiful Bahari Bakarudin, and Boon Yin Khoo. 2023. Structural and Mechanical Variations of Major Ampullate Silk Spun by Malaysian Nephila pilipes Spider. Fibers and Polymers, 24, 3, (2023), 1029-1038. DOI: 10.1007/s12221-023-00057-3.

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pISSN : 1229 - 9197
eISSN : 1875 - 0052

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